On Jun 18, 10:17 am, "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> wrote:
> Hi,
>
> I have a problem about the controller programing.
> I have some java programming background, i like to include the
> operation code block into a try-except block, so, i do the controller
> method like this:
>
> def edit(self, id):
> return_render = None
> try :
> # something for edit and database read or write
> if form_data_format_error:
> # re-show the edit form and show the error message on
> the page
> return_render = render_response('edit_template.myt')
> else:
> # write to the database and redirect to the user to the
> list
> return_render = redirect_to(action='list')
> except:
You should avoid bare except clauses. In Python, exceptions are not
only for error handling (hint : sys.exit raises an exception to exit
the interpreter).
As a mater of fact, this is the cause of your problem here:
http://pylonshq.com/project/pylonshq/wiki/FAQ#why-do-redirect-to-and-abort-raise-exceptions-instead-of-returning-a-response
> print sys.exc_info()
> return_render = render_response('error_exception.myt')
> return return_render
>
> I know these kind of code has some problem. The redirect_to do not
> work correctly.
It does. That's your try/except block that's preventing the framework
to do it's job.
> Can you help me for the correct way to make this work?
Just get rid of that try/except block - at least until you know which
exceptions you really want to handle at this level. Pylons has great
tools for debugging, you'd probably be better using them instead...
My 2 cents...
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